Railroad chair and joint



(No Model!) T. J. CHRISTY.

RAILROAD CHAIR AND JOINT.

No 271,573. Patented Ja'n. 30,1883'.

Fig

WIIW HM L ll'll l lullll ll llnllll l I \\\\'i W//-V////////// Attesb' 2a2 N. PETERS, Pbqio-Llfiwgriphar. Wnllingion. D. C,

NITED STATES PATENT OFFICE.

THOMAS J. OHRISTY, OF OLNEY, ASSIGNOR TO FRANCIS M. GOODALIJ, OF MARION,ILLINOIS.

RA|LROAD CHAIR AND JOINT.

SPECIFICATION forming-part of Letters Patent No. 271,573, dated January30, 1883.

Application filed September 20, 1882. (No model.) i

To all whom it may concern:

Be it known that I, THOMAS J. CHRISIY, a citizen of the United States,and a resident of Olney, in the county of Richland and State ofIllinois, have invented a certain new and useful lm provementin RailroadChairs and Joints; and I do hereby declare that the following is a full,clear, and exact description of the same, reference being had to theaccompanying draw- I ings, forming a part of this specification.

My invention relates to certain improvements in that class of railroadchairs andjoints in which the base or bottom of the rail or rails restsupon a base-plate, with side plates embracing the web and flanges of therail, and which are held in place by means of spikes passing downthrough such side plates, baseplate, and the railroad-tie upon which theparts are supported; and the object of my improvement is to provide ameans whereby such side plates or clamps are firmly forced against thesides of the rail, so as to effectually and firmly support the same inproper position, and prevent any movement or play of the parts upon eachother. I attain this object by the mechanism illustrated in theaccompanying drawings, in which- Figure l is a detail perspective viewof the supporting base-plat e and side clam ping-plates 0 in position toreceive the rail. Fig. 2 is a transverse section, illustrating the partsin proper position, with the securing-keys ready to be driven intoplace. Fig. 3 is a similar view with the said securing-keys driven intoplace.

Referring to the drawings, A represents the railroad-rail, B the sideclamping plates, D the supporting base-plate, and F. the railroadtie.The clamping-plates B and base-plate D are provided with verticalopenings or keyslots 0 E, through which the headed keys G are drivendown into the tie F, to clamp the plate B firmly against the sides ofthe rail and hold the parts in position on the tie.

5 The difficulty heretofore met with in this class of joints and chairshas been that no means were provided whereby the side plates were causedto firmly clamp and hold the rail, and consequently the rail was butpoorly held, and the parts allowed to work upon each other and becomequickly worn outor broken. To avoid such defective construction is theobject of my present improvement, which consists in forming thesecuring-keys G, with inwardly-taperingsides g, as shown, so that whendriven into the tie F the tendency will be to drive outwardly, (asclearly shown in Fig. 3,) thus causingits head to come forcibly againstthe inner sides, 0, of the keyholes 0 of the clamping-plates B and forcethe same securely 6o against the rail, the outer sides, e, of thebaseplate holes E forming an abutment or fulcrum for the shank of saidkey in manner clearly indicated in Fig. 3 of the drawings. By this meansthe parts are firmly clamped and held 6 together, and theobjections'heretofore existing against this class ofjoints or chairs areentirely overcome.

In order to prevent creeping of the rails in this class of chairsandjoints, I nick or cut out a portion of the rail-base and formadditional holesthrough the clam pin g-plates B and base-plate D, topermit of a spike being driven down through same, and thus prevent anycreeping action of the rails taking place. 7 5

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

A rail chair orjoint consisting of clampingplates B and base D, providedwith key slots or holes 0 E, in combination with the securing-keys Gr,having inwardly-tapering sides g, as described, and for the purpose setforth.

In testimony whereof I have hereunto set my hand this 15th day ofSeptember, 1882.

THOMAS J. CHRIS'IY.

In presence of- ROBERT BURNS, CHARLES PIOKLES.

